23128907 has 2 divisors, whose sum is σ = 23128908. Its totient is φ = 23128906.

The previous prime is 23128901. The next prime is 23128951. The reversal of 23128907 is 70982132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23128907 - 2⁶ = 23128843 is a prime.

It is not a weakly prime, because it can be changed into another prime (23128901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11564453 + 11564454.

It is an arithmetic number, because the mean of its divisors is an integer number (11564454).

Almost surely, 2^23128907 is an apocalyptic number.

23128907 is a deficient number, since it is larger than the sum of its proper divisors (1).

23128907 is an equidigital number, since it uses as much as digits as its factorization.

23128907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 23128907 is about 4809.2522287774. The cubic root of 23128907 is about 284.9170046625.

The spelling of 23128907 in words is "twenty-three million, one hundred twenty-eight thousand, nine hundred seven".